From 25d609f86d6808eb1f0e8a6cafc3edb4a2b5ae35 Mon Sep 17 00:00:00 2001 From: Josef Bacik Date: Fri, 25 Mar 2016 13:25:48 -0400 Subject: [PATCH] Btrfs: fix callers of btrfs_block_rsv_migrate So btrfs_block_rsv_migrate just unconditionally calls block_rsv_migrate_bytes. Not only this but it unconditionally changes the size of the block_rsv. This isn't a bug strictly speaking, but it makes truncate block rsv's look funny because every time we migrate bytes over its size grows, even though we only want it to be a specific size. So collapse this into one function that takes an update_size argument and make truncate and evict not update the size for consistency sake. Thanks, Signed-off-by: Josef Bacik Signed-off-by: David Sterba --- fs/btrfs/ctree.h | 4 ++-- fs/btrfs/delayed-inode.c | 8 ++++---- fs/btrfs/extent-tree.c | 18 ++++++------------ fs/btrfs/file.c | 4 ++-- fs/btrfs/inode.c | 7 +++---- fs/btrfs/relocation.c | 2 +- 6 files changed, 18 insertions(+), 25 deletions(-) diff --git a/fs/btrfs/ctree.h b/fs/btrfs/ctree.h index 4274a7bfdaed..fe16474fabf3 100644 --- a/fs/btrfs/ctree.h +++ b/fs/btrfs/ctree.h @@ -2661,8 +2661,8 @@ int btrfs_block_rsv_refill(struct btrfs_root *root, struct btrfs_block_rsv *block_rsv, u64 min_reserved, enum btrfs_reserve_flush_enum flush); int btrfs_block_rsv_migrate(struct btrfs_block_rsv *src_rsv, - struct btrfs_block_rsv *dst_rsv, - u64 num_bytes); + struct btrfs_block_rsv *dst_rsv, u64 num_bytes, + int update_size); int btrfs_cond_migrate_bytes(struct btrfs_fs_info *fs_info, struct btrfs_block_rsv *dest, u64 num_bytes, int min_factor); diff --git a/fs/btrfs/delayed-inode.c b/fs/btrfs/delayed-inode.c index d3aaabbfada0..f749a5447b2a 100644 --- a/fs/btrfs/delayed-inode.c +++ b/fs/btrfs/delayed-inode.c @@ -553,7 +553,7 @@ static int btrfs_delayed_item_reserve_metadata(struct btrfs_trans_handle *trans, dst_rsv = &root->fs_info->delayed_block_rsv; num_bytes = btrfs_calc_trans_metadata_size(root, 1); - ret = btrfs_block_rsv_migrate(src_rsv, dst_rsv, num_bytes); + ret = btrfs_block_rsv_migrate(src_rsv, dst_rsv, num_bytes, 1); if (!ret) { trace_btrfs_space_reservation(root->fs_info, "delayed_item", item->key.objectid, @@ -649,7 +649,7 @@ static int btrfs_delayed_inode_reserve_metadata( if (!ret) goto out; - ret = btrfs_block_rsv_migrate(src_rsv, dst_rsv, num_bytes); + ret = btrfs_block_rsv_migrate(src_rsv, dst_rsv, num_bytes, 1); if (!ret) goto out; @@ -663,12 +663,12 @@ static int btrfs_delayed_inode_reserve_metadata( * since this really shouldn't happen that often. */ ret = btrfs_block_rsv_migrate(&root->fs_info->global_block_rsv, - dst_rsv, num_bytes); + dst_rsv, num_bytes, 1); goto out; } migrate: - ret = btrfs_block_rsv_migrate(src_rsv, dst_rsv, num_bytes); + ret = btrfs_block_rsv_migrate(src_rsv, dst_rsv, num_bytes, 1); out: /* diff --git a/fs/btrfs/extent-tree.c b/fs/btrfs/extent-tree.c index 777d9a5aa83f..1ceabb7a4479 100644 --- a/fs/btrfs/extent-tree.c +++ b/fs/btrfs/extent-tree.c @@ -5265,8 +5265,9 @@ static void block_rsv_release_bytes(struct btrfs_fs_info *fs_info, } } -static int block_rsv_migrate_bytes(struct btrfs_block_rsv *src, - struct btrfs_block_rsv *dst, u64 num_bytes) +int btrfs_block_rsv_migrate(struct btrfs_block_rsv *src, + struct btrfs_block_rsv *dst, u64 num_bytes, + int update_size) { int ret; @@ -5274,7 +5275,7 @@ static int block_rsv_migrate_bytes(struct btrfs_block_rsv *src, if (ret) return ret; - block_rsv_add_bytes(dst, num_bytes, 1); + block_rsv_add_bytes(dst, num_bytes, update_size); return 0; } @@ -5381,13 +5382,6 @@ int btrfs_block_rsv_refill(struct btrfs_root *root, return ret; } -int btrfs_block_rsv_migrate(struct btrfs_block_rsv *src_rsv, - struct btrfs_block_rsv *dst_rsv, - u64 num_bytes) -{ - return block_rsv_migrate_bytes(src_rsv, dst_rsv, num_bytes); -} - void btrfs_block_rsv_release(struct btrfs_root *root, struct btrfs_block_rsv *block_rsv, u64 num_bytes) @@ -5567,7 +5561,7 @@ int btrfs_orphan_reserve_metadata(struct btrfs_trans_handle *trans, u64 num_bytes = btrfs_calc_trans_metadata_size(root, 1); trace_btrfs_space_reservation(root->fs_info, "orphan", btrfs_ino(inode), num_bytes, 1); - return block_rsv_migrate_bytes(src_rsv, dst_rsv, num_bytes); + return btrfs_block_rsv_migrate(src_rsv, dst_rsv, num_bytes, 1); } void btrfs_orphan_release_metadata(struct inode *inode) @@ -5622,7 +5616,7 @@ int btrfs_subvolume_reserve_metadata(struct btrfs_root *root, BTRFS_RESERVE_FLUSH_ALL); if (ret == -ENOSPC && use_global_rsv) - ret = btrfs_block_rsv_migrate(global_rsv, rsv, num_bytes); + ret = btrfs_block_rsv_migrate(global_rsv, rsv, num_bytes, 1); if (ret && *qgroup_reserved) btrfs_qgroup_free_meta(root, *qgroup_reserved); diff --git a/fs/btrfs/file.c b/fs/btrfs/file.c index 2234e88cf674..f3f61d1ad18a 100644 --- a/fs/btrfs/file.c +++ b/fs/btrfs/file.c @@ -2479,7 +2479,7 @@ static int btrfs_punch_hole(struct inode *inode, loff_t offset, loff_t len) } ret = btrfs_block_rsv_migrate(&root->fs_info->trans_block_rsv, rsv, - min_size); + min_size, 0); BUG_ON(ret); trans->block_rsv = rsv; @@ -2522,7 +2522,7 @@ static int btrfs_punch_hole(struct inode *inode, loff_t offset, loff_t len) } ret = btrfs_block_rsv_migrate(&root->fs_info->trans_block_rsv, - rsv, min_size); + rsv, min_size, 0); BUG_ON(ret); /* shouldn't happen */ trans->block_rsv = rsv; diff --git a/fs/btrfs/inode.c b/fs/btrfs/inode.c index 4421954720b8..3e61bd1f3f65 100644 --- a/fs/btrfs/inode.c +++ b/fs/btrfs/inode.c @@ -5264,7 +5264,7 @@ void btrfs_evict_inode(struct inode *inode) if (steal_from_global) { if (!btrfs_check_space_for_delayed_refs(trans, root)) ret = btrfs_block_rsv_migrate(global_rsv, rsv, - min_size); + min_size, 0); else ret = -ENOSPC; } @@ -9116,7 +9116,7 @@ static int btrfs_truncate(struct inode *inode) /* Migrate the slack space for the truncate to our reserve */ ret = btrfs_block_rsv_migrate(&root->fs_info->trans_block_rsv, rsv, - min_size); + min_size, 0); BUG_ON(ret); /* @@ -9156,7 +9156,7 @@ static int btrfs_truncate(struct inode *inode) } ret = btrfs_block_rsv_migrate(&root->fs_info->trans_block_rsv, - rsv, min_size); + rsv, min_size, 0); BUG_ON(ret); /* shouldn't happen */ trans->block_rsv = rsv; } @@ -9177,7 +9177,6 @@ static int btrfs_truncate(struct inode *inode) ret = btrfs_end_transaction(trans, root); btrfs_btree_balance_dirty(root); } - out: btrfs_free_block_rsv(root, rsv); diff --git a/fs/btrfs/relocation.c b/fs/btrfs/relocation.c index 0477dca154ed..0bf3bc879503 100644 --- a/fs/btrfs/relocation.c +++ b/fs/btrfs/relocation.c @@ -4643,7 +4643,7 @@ int btrfs_reloc_post_snapshot(struct btrfs_trans_handle *trans, if (rc->merge_reloc_tree) { ret = btrfs_block_rsv_migrate(&pending->block_rsv, rc->block_rsv, - rc->nodes_relocated); + rc->nodes_relocated, 1); if (ret) return ret; } -- 2.20.1